| 摘要 |
PCT No. PCT/AU83/00065 Sec. 371 Date Jan. 10, 1984 Sec. 102(e) Date Jan. 10, 1984 PCT Filed May 20, 1983 PCT Pub. No. WO83/04196 PCT Pub. Date Dec. 8, 1983.A machine for forming helically wound pipes from a strip (15), having interengaging means on its longitudinal edges, in which a series of rollers (2 and 3) is positioned to form an annulus of rollers (2 and 3) arranged to curve the strip (15) to a helical form within the annulus with the edges of the strip (15) overlapping and means (18, 19) to press the interchanging means on the overlapping edges together to form a pipe (5), in which a pair of feed rollers (16, 17) remote from the means to press (18, 19) controls the rate of feed of the strip (15) to maintain the strip (15) between the feed rollers (16, 17) and the means to press (18, 19) in tension. A modification drives all of the rollers of the annulus synchronously.
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